What people are saying - Write a review
We haven't found any reviews in the usual places.
THE ELEMENTS OF MATTER AND LUMI
25 other sections not shown
Other editions - View all
absorbed absorption activator atoms alpha particles anion average bonding bonding energy cathodoluminescence cence centers charged material particles Chem chemical conduction band cub.-ZnS cubic decay phosphors decreases effect emission band emission spectra emitted energy levels example excitation density excitation energy excited electron exciton exhibit Fluorescence flux heat hex.-ZnS hex.-ZnS:Cu host crystal impurity atoms increasing infrared intensity ionic ions kinescope lamp lattice light lumines luminescence efficiency luminescence emission luminescence photons maximum mg cm-2 Mn activator mole molecules obtained operation Optical Soc output oxide Paperbound peak phors phos phosphor crystals phosphor screens phosphorescence phosphorescence emission photoconduction photoluminescence photons photostimulation phototube Phys Physik positive hole primary particles primary photons produced proportion quantum radiation radiative transition rays rbhdl relative room temperature shown in Fig silicate solid spectrum structure sulphide tenebrescence thermal thermal radiation tion traps voltage wavelengths weight per cent whereas x-ray zinc